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hypabyssal

[hip-uh-bis-uh l, hahy-puh-] /ˌhɪp əˈbɪs əl, ˌhaɪ pə-/
adjective, Geology
1.
(of an igneous rock) intermediate in texture between coarse-grained intrusive rocks and fine-grained extrusive rocks.
2.
noting any of various minor intrusions, as dikes and sills, that have crystallized under conditions intermediate between plutonic and extrusive.
Origin
1890-1895
1890-95; hyp- + abyssal
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for hypabyssal

hypabyssal

/ˌhɪpəˈbɪsəl/
adjective
1.
(of igneous rocks) derived from magma that has solidified at shallow depth in the form of dykes, sills, etc
Word Origin
C19: from hyp- + -abyssal
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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